# Deep Lens Survey

Minor planets discovered: 79 :
* see § List of discovered minor planets
The Deep Lens Survey (DLS, short for "Deep Gravitational Lensing Survey") is an ultra-deep multi-band optical survey of seven 4 square degree fields. Mosaic CCD imagers at the National Optical Astronomy Observatory's Blanco (Cerro Tololo) and Mayall telescopes (Kitt Peak) are being used. The deep fields took five years to complete (2001–2006), in four bands: B, V, R, and z', to 29/29/29/28 mag per square arcsecond surface brightness. Optical transient events (including moving objects such as minor planets and comets) and supernova candidates are released in real time.

## Survey

The main goal of the survey is to produce unbiased maps of the large-scale structure of the mass distribution beyond the local universe, via very deep multicolor imaging of seven 2-degree fields and colour-redshifts. The shear of distant galaxies induced by the mass of foreground structures will be measured. These weak-lensing observations are sensitive to all forms of clumped mass and will yield unbiased mass maps with resolution of one arcmin in the plane of the sky (about 120 kpc/h at z = 0.2), in multiple redshift ranges. These maps will measure for the first time the change in large scale structure from z = 1 to the present epoch, and test the current theories of structure formation, which predict that mass in the low-redshift universe has a particular filamentary/sheetlike structure. These observations will directly constrain the clustering properties of matter, and, when compared with the results from microwave background anisotropy missions, will test the basic theory of structure formation via gravitational instability.
While this is the main goal of the survey, a wide-field imaging survey has a myriad of other uses. In addition, the group is acquiring the data in a way which makes it possible to detect variable objects on scales of hours to months, by spreading observations of individual subfields over 4 runs over two years.

## Discoveries
### List of discovered minor planets

| (46060) 2001 DL$_{88}$ | 26 February 2001 | list |
| (89886) 2002 CT$_{230}$ | 14 February 2002 | list |
| (104314) 2000 EC$_{203}$ | 5 March 2000 | list |
| (107558) 2001 DK$_{85}$ | 23 February 2001 | list |
| (107868) 2001 FT$_{85}$ | 26 March 2001 | list |
| (114722) 2003 GN$_{33}$ | 3 April 2003 | list |
| (143352) 2003 AB$_{85}$ | 7 January 2003 | list |
| (144688) 2004 FG$_{145}$ | 29 March 2004 | list |
| (147428) 2003 GM$_{54}$ | 1 April 2003 | list |
| (148990) 2001 YX$_{92}$ | 17 December 2001 | list |
| (154544) 2003 GP$_{33}$ | 4 April 2003 | list |
| (156423) 2002 AD$_{92}$ | 12 January 2002 | list |
| (159758) 2003 FZ$_{122}$ | 31 March 2003 | list |
| (160842) 2000 YE$_{142}$ | 21 December 2000 | list |
| (189839) 2003 AQ$_{83}$ | 4 January 2003 | list |
| (193671) 2001 DV$_{84}$ | 23 February 2001 | list |
| (196401) 2003 GM$_{33}$ | 3 April 2003 | list |
| (205413) 2001 FX$_{85}$ | 26 March 2001 | list |
| (208544) 2002 AE$_{92}$ | 12 January 2002 | list |
| (216501) 2000 EP$_{203}$ | 5 March 2000 | list |
| (220530) 2004 FT$_{18}$ | 26 March 2004 | list |
| (223271) 2003 GY$_{32}$ | 1 April 2003 | list |
| (223272) 2003 GC$_{33}$ | 1 April 2003 | list |
| (226345) 2003 FM$_{122}$ | 31 March 2003 | list |
| (231056) 2005 JG$_{63}$ | 3 May 2005 | list |
| (231914) 2000 YT$_{140}$ | 19 December 2000 | list |
| (242393) 2004 FO$_{18}$ | 26 March 2004 | list |
| (242599) 2005 JG$_{45}$ | 2 May 2005 | list |
| (244218) 2002 AA$_{93}$ | 14 January 2002 | list |
| (245421) 2005 JW$_{63}$ | 4 May 2005 | list |
| (245431) 2005 JX$_{108}$ | 6 May 2005 | list |
| (252143) 2000 YK$_{141}$ | 20 December 2000 | list |
| (257954) 2000 YY$_{141}$ | 20 December 2000 | list |
| (264468) 2001 FY$_{85}$ | 26 March 2001 | list |
| (267852) 2003 UJ$_{283}$ | 30 October 2003 | list |
| (270019) 2001 FA$_{86}$ | 26 March 2001 | list |
| (270473) 2002 DV$_4$ | 17 February 2002 | list |
| (275636) 2000 EJ$_{203}$ | 5 March 2000 | list |
| (283757) 2003 EU$_{61}$ | 8 March 2003 | list |
| (285797) 2000 WN$_{193}$ | 24 November 2000 | list |
| (285835) 2001 DW$_{83}$ | 23 February 2001 | list |
| (287594) 2003 FK$_{122}$ | 31 March 2003 | list |
| (297152) 2010 UQ$_{56}$ | 14 February 2002 | list |
| (301831) 2011 QH$_{14}$ | 5 March 2000 | list |
| (302421) 2002 CU$_{230}$ | 14 February 2002 | list |
| (302806) 2003 AH$_{83}$ | 4 January 2003 | list |
| (302864) 2003 GJ$_{54}$ | 1 April 2003 | list |
| (306179) 2010 WA$_{55}$ | 2 April 2003 | list |
| (306339) 2011 SQ$_{129}$ | 5 January 2003 | list |
| (306581) 2000 ED$_{204}$ | 6 March 2000 | list |
| (317662) 2003 FY$_{122}$ | 31 March 2003 | list |
| (318601) 2005 JX$_{45}$ | 3 May 2005 | list |
| (321876) 2010 SG$_7$ | 23 February 2001 | list |
| (337289) 2000 WL$_{194}$ | 25 November 2000 | list |
| (338450) 2003 EG$_{55}$ | 9 March 2003 | list |
| (348151) 2004 FS$_{18}$ | 26 March 2004 | list |
| (354650) 2005 JR$_{45}$ | 3 May 2005 | list |
| (357315) 2003 FL$_{122}$ | 31 March 2003 | list |
| (360809) 2005 JH$_{63}$ | 3 May 2005 | list |
| (365944) 2012 AZ$_{16}$ | 9 March 2003 | list |
| (368103) 2013 EN | 3 May 2005 | list |
| (370195) 2002 CU$_{231}$ | 15 February 2002 | list |
| (370686) 2004 FS$_{123}$ | 26 March 2004 | list |
| (385437) 2003 GH$_{55}$ | 1 April 2003 | list |
| (393559) 2003 GO$_{33}$ | 3 April 2003 | list |
| (397214) 2006 GU$_{37}$ | 2 April 2006 | list |
| (415789) 2000 WO$_{193}$ | 24 November 2000 | list |
| (416827) 2005 JU$_{45}$ | 3 May 2005 | list |
| (416834) 2005 JY$_{108}$ | 6 May 2005 | list |
| (416835) 2005 JA$_{109}$ | 6 May 2005 | list |
| (427831) 2005 JQ$_{108}$ | 4 May 2005 | list |
| (434011) 2000 YU$_{140}$ | 19 December 2000 | list |
| (455743) 2005 JV$_{45}$ | 3 May 2005 | list |
| (461503) 2003 FJ$_{122}$ | 31 March 2003 | list |
| (461672) 2005 JM$_{22}$ | 6 May 2005 | list |
| (464869) 2005 JL$_{22}$ | 4 May 2005 | list |
| (464881) 2005 JF$_{177}$ | 5 May 2005 | list |
| (468500) 2005 JR$_{108}$ | 6 May 2005 | list |
| (481053) 2005 JP$_{45}$ | 3 May 2005 | list |

### Galaxy clusters

Significant discoveries :
| Cluster | Date | Notes | Names | Refs |
| DLSCL J0916.2+2951 | 2012 | This is a dissociative galaxy cluster merger with a large separation between the baryonic and dark matter components. | Musket Ball Cluster | |